drivers/amlogic/media/vout/lcd/backlight/bl_extern/i2c_lp8556.c - manifest_repos/u-boot - Git at Google

 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
 /*
  * Copyright (c) 2019 Amlogic, Inc. All rights reserved.
  */

 #include <common.h>
 #include <malloc.h>
 #include <asm/arch/gpio.h>
 #include <fdtdec.h>
 #include <amlogic/media/vout/lcd/aml_lcd.h>
 #include <amlogic/media/vout/lcd/bl_extern.h>
 #include <amlogic/media/vout/lcd/lcd_i2c_dev.h>
 #include "bl_extern.h"
 #include "../lcd_common.h"
 #include "../lcd_reg.h"

 #define BL_EXTERN_NAME			"i2c_lp8556"
 #define BL_EXTERN_TYPE			BL_EXTERN_I2C
 #define BL_EXTERN_I2C_ADDR		(0x58 >> 1) //7bit address

 //#define BL_EXT_I2C_PORT_INIT     /* no need init i2c port default */

 #define BL_EXTERN_CMD_SIZE        LCD_EXT_CMD_SIZE_DYNAMIC
 static unsigned char init_on_table[] = {
 	0xc0, 2, 0xa2, 0x20,
 	0xc0, 2, 0xa5, 0x54,
 	0xc0, 2, 0x00, 0xff,
 	0xc0, 2, 0x01, 0x05,
 	0xc0, 2, 0xa2, 0x20,
 	0xc0, 2, 0xa5, 0x54,
 	0xc0, 2, 0xa1, 0xb7,
 	0xc0, 2, 0xa0, 0xff,
 	0xc0, 2, 0x00, 0x80,
 	0xff, 0, /*ending*/
 };

 static unsigned char init_off_table[] = {
 	0xff, 0, /*ending*/
 };

 static int bl_extern_power_cmd_dynamic_size(unsigned char *table, int flag)
 {
 	struct aml_bl_extern_get_driver *bl_extern = aml_bl_extern_get_driver();
 	int i = 0, j = 0, max_len = 0, step = 0;
 	unsigned char type, cmd_size;
 	int delay_ms, ret = 0;

 	if (flag)
 		max_len = bl_extern->config->init_on_cnt;
 	else
 		max_len = bl_extern->config->init_off_cnt;

 	while ((i + 1) < max_len) {
 		type = table[i];
 		if (type == LCD_EXT_CMD_TYPE_END)
 			break;
 		if (lcd_debug_print_flag) {
 			BLEX("%s: step %d: type=0x%02x, cmd_size=%d\n",
 			     __func__, step, type, table[i + 1]);
 		}
 		cmd_size = table[i+1];
 		if (cmd_size == 0)
 			goto power_cmd_dynamic_next;
 		if ((i + 2 + cmd_size) > max_len)
 			break;

 		if (type == LCD_EXT_CMD_TYPE_NONE) {
 			/* do nothing */
 		} else if (type == LCD_EXT_CMD_TYPE_DELAY) {
 			delay_ms = 0;
 			for (j = 0; j < cmd_size; j++)
 				delay_ms += table[i + 2 + j];
 			if (delay_ms > 0)
 				mdelay(delay_ms);
 		} else if (type == LCD_EXT_CMD_TYPE_CMD) {
 			ret =
 			lcd_extern_i2c_write(bl_extern->config->i2c_bus,
 					     bl_extern->config->i2c_addr,
 					     &table[i + 2], cmd_size);
 		} else if (type == LCD_EXT_CMD_TYPE_CMD_DELAY) {
 			ret =
 			lcd_extern_i2c_write(bl_extern->config->i2c_bus,
 					     bl_extern->config->i2c_addr,
 					     &table[i + 2], (cmd_size - 1));
 			if (table[i+1+cmd_size] > 0)
 				mdelay(table[i + 1 + cmd_size]);
 		} else {
 			BLEXERR("%s: %s(%d): type 0x%02x invalid\n",
 				__func__, bl_extern->config->name,
 				bl_extern->config->index, type);
 		}
 power_cmd_dynamic_next:
 		i += (cmd_size + 2);
 		step++;
 	}

 	return ret;
 }

 static int bl_extern_power_cmd_fixed_size(unsigned char *table, int flag)
 {
 	struct aml_bl_extern_get_driver *bl_extern = aml_bl_extern_get_driver();
 	int i = 0, j, max_len, step = 0;
 	unsigned char type, cmd_size;
 	int delay_ms, ret = 0;

 	cmd_size = bl_extern->config->cmd_size;
 	if (cmd_size < 2) {
 		BLEXERR("%s: invalid cmd_size %d\n", __func__, cmd_size);
 		return -1;
 	}

 	if (flag)
 		max_len = bl_extern->config->init_on_cnt;
 	else
 		max_len = bl_extern->config->init_off_cnt;

 	while ((i + cmd_size) <= max_len) {
 		type = table[i];
 		if (type == LCD_EXT_CMD_TYPE_END)
 			break;
 		if (lcd_debug_print_flag) {
 			BLEX("%s: step %d: type=0x%02x, cmd_size=%d\n",
 			     __func__, step, type, cmd_size);
 		}
 		if (type == LCD_EXT_CMD_TYPE_NONE) {
 			/* do nothing */
 		} else if (type == LCD_EXT_CMD_TYPE_DELAY) {
 			delay_ms = 0;
 			for (j = 0; j < (cmd_size - 1); j++)
 				delay_ms += table[i+1+j];
 			if (delay_ms > 0)
 				mdelay(delay_ms);
 		} else if (type == LCD_EXT_CMD_TYPE_CMD) {
 			ret =
 			lcd_extern_i2c_write(bl_extern->config->i2c_bus,
 					     bl_extern->config->i2c_addr,
 					     &table[i + 1], (cmd_size - 1));
 		} else if (type == LCD_EXT_CMD_TYPE_CMD_DELAY) {
 			ret =
 			lcd_extern_i2c_write(bl_extern->config->i2c_bus,
 					     bl_extern->config->i2c_addr,
 					     &table[i + 1], (cmd_size - 2));
 			if (table[i + cmd_size - 1] > 0)
 				mdelay(table[i + cmd_size - 1]);
 		} else {
 			BLEXERR("%s: %s(%d): type 0x%02x is invalid\n",
 				__func__, bl_extern->config->name,
 				bl_extern->config->index, type);
 		}
 		i += cmd_size;
 		step++;
 	}

 	return ret;
 }

 static int i2c_lp8556_power_ctrl(int flag)
 {
 	struct aml_bl_extern_driver_s *bl_extern = aml_bl_extern_get_driver();
 	unsigned char *table;
 	unsigned char cmd_size;
 	int ret = 0;

 	/* step 1: power prepare */
 #ifdef BL_EXT_I2C_PORT_INIT
 	aml_bl_extern_i2c_bus_change(bl_extern->config->i2c_bus);
 #endif

 	/* step 2: power cmd */
 	cmd_size = bl_extern->config->cmd_size;
 	if (flag)
 		table = bl_extern->config->init_on;
 	else
 		table = bl_extern->config->init_off;
 	if (cmd_size < 1) {
 		BLEXERR("%s: cmd_size %d is invalid\n", __func__, cmd_size);
 		ret = -1;
 		goto power_ctrl_next;
 	}
 	if (table == NULL) {
 		BLEXERR("%s: init_table %d is NULL\n", __func__, flag);
 		ret = -1;
 		goto power_ctrl_next;
 	}
 	if (cmd_size == LCD_EXT_CMD_SIZE_DYNAMIC)
 		ret = bl_extern_power_cmd_dynamic_size(table, flag);
 	else
 		ret = bl_extern_power_cmd_fixed_size(table, flag);

 power_ctrl_next:
 	/* step 3: power finish */
 #ifdef BL_EXT_I2C_PORT_INIT
 	aml_bl_extern_i2c_bus_recovery();
 #endif

 	BLEX("%s: %s(%d): %d\n", __func__, bl_extern->config->name,
 	     bl_extern->config->index, flag);
 	return ret;
 }

 static int i2c_lp8556_power_on(void)
 {
 	int ret;

 	ret = i2c_lp8556_power_ctrl(1);

 	return ret;
 }

 static int i2c_lp8556_power_off(void)
 {
 	return 0;
 }

 static int i2c_lp8556_set_level(unsigned int level)
 {
 	struct aml_bl_extern_get_driver *bl_extern = aml_bl_extern_get_driver();
 	unsigned char t_data[5];
 	int ret = 0;

 	if (bl_extern->config->dim_max > 255) {
 		t_data[0] = 0x10;
 		t_data[1] = level & 0xff;
 		t_data[2] = 0x11;
 		t_data[3] = (level >> 8) & 0xf;
 		ret = aml_lcd_extern_i2c_write(bl_extern->config->i2c_bus,
 					       bl_extern->config->i2c_addr,
 					       t_data, 4);
 	} else {
 		tData[0] = 0x0;
 		tData[1] = level & 0xff;
 		ret = aml_lcd_extern_i2c_write(bl_extern->config->i2c_bus,
 					       bl_extern->config->i2c_addr,
 					       t_data, 2);
 	}

 	return ret;
 }

 static int i2c_lp8556_update(void)
 {
 	struct aml_bl_extern_get_driver *bl_extern = aml_bl_extern_get_driver();

 	if (bl_extern == NULL) {
 		BLEXERR("%s driver is null\n", BL_EXTERN_NAME);
 		return -1;
 	}

 	bl_extern->device_power_on = i2c_lp8556_power_on;
 	bl_extern->device_power_off = i2c_lp8556_power_off;
 	bl_extern->device_bri_update = i2c_lp8556_set_level;

 	bl_extern->config->cmd_size = BL_EXTERN_CMD_SIZE;
 	if (!bl_extern->config->init_loaded) {
 		bl_extern->config->init_on = init_on_table;
 		bl_extern->config->init_on_cnt = sizeof(init_on_table);
 		bl_extern->config->init_off = init_off_table;
 		bl_extern->config->init_off_cnt = sizeof(init_off_table);
 	}

 	return 0;
 }

 int i2c_lp8556_probe(void)
 {
 	int ret = 0;

 	ret = i2c_lp8556_update();
 	if (lcd_debug_print_flag)
 		BLEX("%s: %d\n", __func__, ret);

 	return ret;
 }
	// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
	/*
	* Copyright (c) 2019 Amlogic, Inc. All rights reserved.
	*/

	#include <common.h>
	#include <malloc.h>
	#include <asm/arch/gpio.h>
	#include <fdtdec.h>
	#include <amlogic/media/vout/lcd/aml_lcd.h>
	#include <amlogic/media/vout/lcd/bl_extern.h>
	#include <amlogic/media/vout/lcd/lcd_i2c_dev.h>
	#include "bl_extern.h"
	#include "../lcd_common.h"
	#include "../lcd_reg.h"

	#define BL_EXTERN_NAME "i2c_lp8556"
	#define BL_EXTERN_TYPE BL_EXTERN_I2C
	#define BL_EXTERN_I2C_ADDR (0x58 >> 1) //7bit address

	//#define BL_EXT_I2C_PORT_INIT /* no need init i2c port default */

	#define BL_EXTERN_CMD_SIZE LCD_EXT_CMD_SIZE_DYNAMIC
	static unsigned char init_on_table[] = {
	0xc0, 2, 0xa2, 0x20,
	0xc0, 2, 0xa5, 0x54,
	0xc0, 2, 0x00, 0xff,
	0xc0, 2, 0x01, 0x05,
	0xc0, 2, 0xa2, 0x20,
	0xc0, 2, 0xa5, 0x54,
	0xc0, 2, 0xa1, 0xb7,
	0xc0, 2, 0xa0, 0xff,
	0xc0, 2, 0x00, 0x80,
	0xff, 0, /ending/
	};

	static unsigned char init_off_table[] = {
	0xff, 0, /ending/
	};

	static int bl_extern_power_cmd_dynamic_size(unsigned char *table, int flag)
	{
	struct aml_bl_extern_get_driver *bl_extern = aml_bl_extern_get_driver();
	int i = 0, j = 0, max_len = 0, step = 0;
	unsigned char type, cmd_size;
	int delay_ms, ret = 0;

	if (flag)
	max_len = bl_extern->config->init_on_cnt;
	else
	max_len = bl_extern->config->init_off_cnt;

	while ((i + 1) < max_len) {
	type = table[i];
	if (type == LCD_EXT_CMD_TYPE_END)
	break;
	if (lcd_debug_print_flag) {
	BLEX("%s: step %d: type=0x%02x, cmd_size=%d\n",
	__func__, step, type, table[i + 1]);
	}
	cmd_size = table[i+1];
	if (cmd_size == 0)
	goto power_cmd_dynamic_next;
	if ((i + 2 + cmd_size) > max_len)
	break;

	if (type == LCD_EXT_CMD_TYPE_NONE) {
	/* do nothing */
	} else if (type == LCD_EXT_CMD_TYPE_DELAY) {
	delay_ms = 0;
	for (j = 0; j < cmd_size; j++)
	delay_ms += table[i + 2 + j];
	if (delay_ms > 0)
	mdelay(delay_ms);
	} else if (type == LCD_EXT_CMD_TYPE_CMD) {
	ret =
	lcd_extern_i2c_write(bl_extern->config->i2c_bus,
	bl_extern->config->i2c_addr,
	&table[i + 2], cmd_size);
	} else if (type == LCD_EXT_CMD_TYPE_CMD_DELAY) {
	ret =
	lcd_extern_i2c_write(bl_extern->config->i2c_bus,
	bl_extern->config->i2c_addr,
	&table[i + 2], (cmd_size - 1));
	if (table[i+1+cmd_size] > 0)
	mdelay(table[i + 1 + cmd_size]);
	} else {
	BLEXERR("%s: %s(%d): type 0x%02x invalid\n",
	__func__, bl_extern->config->name,
	bl_extern->config->index, type);
	}
	power_cmd_dynamic_next:
	i += (cmd_size + 2);
	step++;
	}

	return ret;
	}

	static int bl_extern_power_cmd_fixed_size(unsigned char *table, int flag)
	{
	struct aml_bl_extern_get_driver *bl_extern = aml_bl_extern_get_driver();
	int i = 0, j, max_len, step = 0;
	unsigned char type, cmd_size;
	int delay_ms, ret = 0;

	cmd_size = bl_extern->config->cmd_size;
	if (cmd_size < 2) {
	BLEXERR("%s: invalid cmd_size %d\n", __func__, cmd_size);
	return -1;
	}

	if (flag)
	max_len = bl_extern->config->init_on_cnt;
	else
	max_len = bl_extern->config->init_off_cnt;

	while ((i + cmd_size) <= max_len) {
	type = table[i];
	if (type == LCD_EXT_CMD_TYPE_END)
	break;
	if (lcd_debug_print_flag) {
	BLEX("%s: step %d: type=0x%02x, cmd_size=%d\n",
	__func__, step, type, cmd_size);
	}
	if (type == LCD_EXT_CMD_TYPE_NONE) {
	/* do nothing */
	} else if (type == LCD_EXT_CMD_TYPE_DELAY) {
	delay_ms = 0;
	for (j = 0; j < (cmd_size - 1); j++)
	delay_ms += table[i+1+j];
	if (delay_ms > 0)
	mdelay(delay_ms);
	} else if (type == LCD_EXT_CMD_TYPE_CMD) {
	ret =
	lcd_extern_i2c_write(bl_extern->config->i2c_bus,
	bl_extern->config->i2c_addr,
	&table[i + 1], (cmd_size - 1));
	} else if (type == LCD_EXT_CMD_TYPE_CMD_DELAY) {
	ret =
	lcd_extern_i2c_write(bl_extern->config->i2c_bus,
	bl_extern->config->i2c_addr,
	&table[i + 1], (cmd_size - 2));
	if (table[i + cmd_size - 1] > 0)
	mdelay(table[i + cmd_size - 1]);
	} else {
	BLEXERR("%s: %s(%d): type 0x%02x is invalid\n",
	__func__, bl_extern->config->name,
	bl_extern->config->index, type);
	}
	i += cmd_size;
	step++;
	}

	return ret;
	}

	static int i2c_lp8556_power_ctrl(int flag)
	{
	struct aml_bl_extern_driver_s *bl_extern = aml_bl_extern_get_driver();
	unsigned char *table;
	unsigned char cmd_size;
	int ret = 0;

	/* step 1: power prepare */
	#ifdef BL_EXT_I2C_PORT_INIT
	aml_bl_extern_i2c_bus_change(bl_extern->config->i2c_bus);
	#endif

	/* step 2: power cmd */
	cmd_size = bl_extern->config->cmd_size;
	if (flag)
	table = bl_extern->config->init_on;
	else
	table = bl_extern->config->init_off;
	if (cmd_size < 1) {
	BLEXERR("%s: cmd_size %d is invalid\n", __func__, cmd_size);
	ret = -1;
	goto power_ctrl_next;
	}
	if (table == NULL) {
	BLEXERR("%s: init_table %d is NULL\n", __func__, flag);
	ret = -1;
	goto power_ctrl_next;
	}
	if (cmd_size == LCD_EXT_CMD_SIZE_DYNAMIC)
	ret = bl_extern_power_cmd_dynamic_size(table, flag);
	else
	ret = bl_extern_power_cmd_fixed_size(table, flag);

	power_ctrl_next:
	/* step 3: power finish */
	#ifdef BL_EXT_I2C_PORT_INIT
	aml_bl_extern_i2c_bus_recovery();
	#endif

	BLEX("%s: %s(%d): %d\n", __func__, bl_extern->config->name,
	bl_extern->config->index, flag);
	return ret;
	}

	static int i2c_lp8556_power_on(void)
	{
	int ret;

	ret = i2c_lp8556_power_ctrl(1);

	return ret;
	}

	static int i2c_lp8556_power_off(void)
	{
	return 0;
	}

	static int i2c_lp8556_set_level(unsigned int level)
	{
	struct aml_bl_extern_get_driver *bl_extern = aml_bl_extern_get_driver();
	unsigned char t_data[5];
	int ret = 0;

	if (bl_extern->config->dim_max > 255) {
	t_data[0] = 0x10;
	t_data[1] = level & 0xff;
	t_data[2] = 0x11;
	t_data[3] = (level >> 8) & 0xf;
	ret = aml_lcd_extern_i2c_write(bl_extern->config->i2c_bus,
	bl_extern->config->i2c_addr,
	t_data, 4);
	} else {
	tData[0] = 0x0;
	tData[1] = level & 0xff;
	ret = aml_lcd_extern_i2c_write(bl_extern->config->i2c_bus,
	bl_extern->config->i2c_addr,
	t_data, 2);
	}

	return ret;
	}

	static int i2c_lp8556_update(void)
	{
	struct aml_bl_extern_get_driver *bl_extern = aml_bl_extern_get_driver();

	if (bl_extern == NULL) {
	BLEXERR("%s driver is null\n", BL_EXTERN_NAME);
	return -1;
	}

	bl_extern->device_power_on = i2c_lp8556_power_on;
	bl_extern->device_power_off = i2c_lp8556_power_off;
	bl_extern->device_bri_update = i2c_lp8556_set_level;

	bl_extern->config->cmd_size = BL_EXTERN_CMD_SIZE;
	if (!bl_extern->config->init_loaded) {
	bl_extern->config->init_on = init_on_table;
	bl_extern->config->init_on_cnt = sizeof(init_on_table);
	bl_extern->config->init_off = init_off_table;
	bl_extern->config->init_off_cnt = sizeof(init_off_table);
	}

	return 0;
	}

	int i2c_lp8556_probe(void)
	{
	int ret = 0;

	ret = i2c_lp8556_update();
	if (lcd_debug_print_flag)
	BLEX("%s: %d\n", __func__, ret);

	return ret;
	}